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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Transfer Case - NVG 261-NP2 - Service & Troubleshooting) >> Diagnostic Information and Procedures >> Transfer Case Whine or Rumble Noise

Transfer Case Whine or Rumble Noise

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Transfer Case Whine or Rumble Noise

Cause Correction
DEFINITION: A faulty internal transfer case component that causes a whine noise in the transfer case.
Review the Symptoms - Transfer Case  and perform the necessary inspections.
Faulty bearings
  1. Inspect all bearings and journals. Refer to CLEANING AND INSPECTION .
  2. Replace any faulty bearings and any components with faulty bearing journals. Refer to TRANSFER CASE DISASSEMBLE and TRANSFER CASE ASSEMBLE .
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